Accession Number : AD0671886

Title :   THE PREPARATION OF B-METHYL DERIVATIVES OF C2B4H8; THE CORRELATION OF PROTON NMR CHEMICAL SHIFT MEASUREMENTS IN C2B4H8 DERIVATIVES BY EMPLOYING 'RING CURRENT' CONTRIBUTIONS.

Descriptive Note : Technical rept.,

Corporate Author : CALIFORNIA STATE COLL LOS ANGELES DEPT OF CHEMISTRY

Personal Author(s) : Onak,Thomas ; Marynick,Dennis ; Mattschei,Peter ; Dunks,Gary

Report Date : JUN 1968

Pagination or Media Count : 18

Abstract : By the reaction of methylpentaborane with acetylene and 2-butyne, all of the B-methyl derivatives of 2,3-C2B4H8 and of 2,3-dimethyl-2,3-C2B4H6, respectively, were prepared. The proton nmr of the terminal substituents on boron are correlated by an empirical consideration of 'ring current' contributions. In this approach the relative magnitude, as well as the direction, of the chemical shifts can be reasonably predicted. (Author)

Descriptors :   (*ORGANOBORANES, SYNTHESIS(CHEMISTRY)), BORANES, CARBON COMPOUNDS, ALKYNES, NUCLEAR MAGNETIC RESONANCE, INFRARED SPECTRA, MASS SPECTRA, PENTABORANES

Subject Categories : Organic Chemistry
      Atomic and Molecular Physics and Spectroscopy

Distribution Statement : APPROVED FOR PUBLIC RELEASE